Sole-channeling tool.



P. E. BBRTRAND.

$OLE GHANNELING TOOL.

APPLICATION FILED APR.15, 1911.

Patented June 25, 1912.

j 1 UNITED STATES PATENT OFFICE.

FREDERIC E. BERTRAND, SWAMPSCOTT, MASSACHUSETTS, ASSTGNOB TO O'NITED SHOE MACHINERY COMPANY, OF PATERSON, NEW" JERSEY, A CORPORATION OF NEW JERSEY.

SOLE-CHANNELIN G TOOL.

Specification of Letters Patent.

' PatentedJune25,1912.

To all whom it may concern:

Be it known that I, Fnnonnio E. BER- TRAND, a citizen of the United States, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain new and: useful Improvements in Sole-Channeling Tools; and I do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to knives for sole channeling machines, and more particularly to lip forming knives for preparing insole blanks for reinforced insole work, such, for instance, as gem work.

In preparing an insole for gem work, an

- edge knife is used to slit the edge of the sole to form a lip which is afterward turned up, leaving the thin feather on themargin of the sole. The surface of the sole and the lip are then reinforced by being coveredwith canvas. As is well known by experienced shoe makers, the best outline in' the finished shoe is obtained by'varying. the width of the feather at proper points on the sole which, however, varies the hei ht of the lip turned up. In order that the mseam trimming knife may not cut the canvas on the lip, which is liable to occur with a lip of uneven height, it is usual to make thelip of auniform height before the canvas is applied. To this end a lip trimming knife is employed arranged to cut off any surplus width of the lip so that when it is turned up there will be no variation in its height throughout its length. The lip trimming knife preferably is arranged to extend upward from the edge knife at a right angle and in order that the width of the lip may not be varied onthe curves of the periphery of the sole by reasonof one knife edge cutting in advance of the other, the edges of the two knives are placed in a substantially vertical plane. Several objections to the use 7 of knives of this character, as heretofore constructed, have been observed. .One objection is that when'the lip trimming knife is removed for grinding, it requires careful I adjustmentto replace the knife at its origi-. nal distance from the end of the edge knife.

If the trimming knifeis not accurately po sitioned, the width of lip on the next sole I Other defects, which have been apparent,

include the constant adjustment of the trim ming knife in the direct-ion of the line of feed made necessary by frequent grinding, and the liability of the knife to become clogged by the chips out; from the sole.

The objects of the present invention are .to remedy these defects.

To the accomplishment of these objects, and such others as may hereinafter appear, the invention comprises the features and combinations of parts hereinafter described and particularly pointed out in the appended claims.

v The preferred form of the invention is shown in the accompanying drawings, in-

which Figure 1 isa plan of the lip forming knife operating upon a sole; Fig. 2 is an end elevation; Fig. 3'is a front elevation on an enlarged scale; and Fig. 4 is a plan of the end of the edge knifeblock with the trimming knife block removed.

An example of channeling machines to.

which the knife of the present invention may be applied is illustrated and described in Letters Patent of the United States to Frederic E. Bertrand, No. 1,023,801, dated.

gpiril 23,1912, to which reference may be In the embodiment oft-he invention illustrated in the drawings, the knife block 26 is identical with the knife block shown in the hereinbefore mentioned patent, except in the details which'hereinafter will be pare ticularly described. An edge slitting knife- 1 is adjustably secured in a slot in the blockby set screws 2. The upper surface of the block is scored to form teeth 3 (see Figs. 1

and 3) which engage similar'teeth 4 on the under side of a 11p trimming knlfe blocfi It 'is desirable that the teeth 3 and 4 be made quite fine in order to permit delicate lateral adjustment, that is, toward or from the end of the edge slitting knife, the size of the teeth shown in the drawings having been exaggerated for convenience in delineation. The block projects over the edge knife and the projecting end is split and provided with an 8.11%11181' slot (Fig. 2) in WlllCll a lip trimmin 1 the cutting edge of the knife 1.

nife' 6 is clamped by a screw 7. -T e lip trimmin knife block is secured g to the edge knife b ock by a headed screw 8 by thescrew 8.

When the trimming knife is removed for sharpening, which may be accomplished by loosening the screw 7, it can be instantly replaced at its original distance from the end ofthe edge knife, thus insuring no variation in the width of the lip. Grinding the trimming knife often brings its cutting edge 10 out of the vertical plane (see Fig. 2) of As the operator acquires skill in grinding the knife, he will be able to grind enough off the end contacting with the edge knife to lower the knife 6 sufliciently when replaced to cause enough of an advance of its edge 10, which has also been ground back, transversely across and toward the edge of the knife 1 to maintain the desired vertical alinement of these edges. This automatic adjustment of the cutting edges of the two knives is made possible b the use of the knife holding slot in the b ock -5 arranged at an angle to the-face of the knife 1.

If the exact amount required to automatically adjust the trimming knife has not been removed fromthe end of the knife 6,

' of that knife.

. portion 0 it manually adjusted to brin the two cutting edges into the same vertical plane by rslightly loosening the screw 8 and then movmg the trimming knife block in the direction of the line of feed of the sole. As

the screw 8 is not loosened enough in accomplishing this adjustment to disengage the teeth 3 and 4, they will restrain the block 5 from any movement toward or from the end of the edge knife which would disturb its predetermined position relative .to the end In order that the trimmed-01f portion 11 of the lip 12 (Fig. 1) may not clog the machine by "ammin under the overhanging the trimmin knife block -5', a

guide piece '13 is secur to the end ofthe edge knife block 26 b ascrew 14. The work en aging face 0 the guide piece is flush wit tends nearl up to the overhangin of the bloc 5 and forward in a vance of the cutting edge of the knife 1. By this construction, the chips from the lip have a smooth bearing surface wherever they may strike and there is no possibility of the passage between the trimming knife and the knife blocks becoming clogged and thereby prleventing a free feeding movement of the so e.

While it is preferred toemploy the specific construction and arrangement of parts shown and described, it will be understood that this construction and arrangement is not essential except in so far as is specified in the claims:

What is claimed as new, is

1. A lip forming knife, having, in combination, an edge knife block, a lip trimming knife block' ad'ustably secure to the edge knife block, an meansfor permitting an adjustment of the trimmin knife block in the direction of the line of feed of the work while preventing movement of said block in a direction across the line of feed, substantially as described.

2. A lip forming knife, having, in combination, an edge knife block, a lip trimming knife block adjustably carried by the edge knife block, interlocking teeth extending in the direction of the km of feed of the work on the adjacent surfaces of the blocks, and means for engaging the teeth and clamping the two blocks together, substantially as described.

3. A lip forming knife, having, in combination, ablock carrying a rojecting edge knife, a second block adjusta 1y mounted on tha edge knife block andoverhanging the edge knife, a li trimmin knife carried by the second bloc and a c ip ide fixed to the end of the edge knife bloc between the edge knife and lip trimming knife block and projecting above and in advance of the cutting edge of the edge knife, substantially as described.

4. A lip forming knife, having, imcombination, a block carrying an ed e knife,-a block carrying a lip trimming 'means for securin the. trimming knife block to the edge 'fe block, permitting adjustment both longitudinally and transgersel 3f the edge ife, substantially as escr1 the end of the block 26 and exportion ife, and v 5. A lip forming knife, having, in comknife longitudinally and transversely of the edge slitting knife and toward and from cured in the overhanging portion of the sec- 10 the face of said knife, substantially as described.

- 6. A lip f0 rnm1g knife, having, in combination, a block carrying a horizontally projecting edge knife, a second block on the edge knife block overhanging and adjustable both longitudinally and transversely of the edge knife, and a lip trimming knife seond block and adjustable toward and from the face of the edge knife, substantially as described.

FREDERIC E. BERTRAND.

Witnesses JOHN H. R1021, CHESTER E. ROGERS. 

